(19)

(11)

EP 0 815 467 A1

(12)

(43) Date of publication: 07.01.1998 Bulletin 1998/02 (21) Application number: 97901451.0 (22) Date of filing: 20.01.1997

(51) International Patent Classification (IPC):  G01S 7/ 495( . ) (86) International application number: PCT/US1997/000565 (87) International publication number: WO 1997/026554 (24.07.1997 Gazette 1997/32)

(84) Designated Contracting States: BE DE ES FR GB (30) Priority: 22.01.1996 US 19960589723 (71) Applicant: HE HOLDINGS, INC. dba HUGHES ELECTRONICS Los Angeles, CA 90045-0066 (US)	(72) Inventor: GROSS, Michael, D. Woodland Hills, CA 91267 (US) (74) Representative: Steil, Christian, Dipl.-Ing., et al  Witte, Weller, Gahlert, Otten & Steil, Patentanwälte, Rotebühlstrasse 121 70178 Stuttgart 70178 Stuttgart (DE)